Power line communication module, system and signal transmission method for vehicle diagnostic information

Abstract

The present invention provides a power line communication module for vehicle diagnostic information, including a controller area network transmission (CAN) high potential terminal, a controller area network transmission (CAN) low potential terminal, a positive voltage terminal, a ground terminal and a signal conversion interface, the controller area network transmission high potential terminal and the controller area network transmission low potential terminal for connecting a controller area network transmission (CAN) bus of a vehicle, The positive voltage terminal and the ground terminal are used to connect to the power supply of the vehicle, and the controller area network transmission from the high potential end of the controller area network transmission and the low potential end of the controller area network transmission After the signal is transmitted to the signal conversion interface, it is converted into a power line communication signal and then transmitted to the power supply of the vehicle through the positive voltage terminal and the ground terminal for further transmission to at least one of the vehicles connected to the power supply. electronic device.

Description

technical field [0001] The invention relates to a vehicle diagnostic information system and its power line communication module. Background technique [0002] Generally speaking, the execution data and status of each component of the vehicle, such as information or signals sensed by various sensors, communicate with each other and cooperate with each other through the vehicle network, and the communication of the vehicle network must be based on specific communication Protocol, such as Controller Area Network (CAN), is a fairly common communication protocol. [0003] However, if the user wants to read the signal of the controller area network protocol to know the data and status of each component of the vehicle, it is usually necessary to use components such as adapters to transfer the signal of the controller area network protocol to the outside to be able to read It is very inconvenient to read the electronic device of the controller area network protocol signal, such as ...

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Problems solved by technology

[0003] However, if the user wants to read the signal of the controller area network protocol to know the data and status of each component of the vehicle, it is usually necessary to use components such as adapters to transfer the signal of the controller area network protocol to the outside to be able to read It is very inconvenient to read the electronic device of the controller area network protocol signal, such as disclosed in the Chinese Taiwan patent TW I436535, and the purpose cannot be achieved unless the special specification adapter and the special specification electronic device are used.

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